atmospherics"(Also called atmospheric interference, strays, sferics.) The radio frequency electromagnetic radiation originating, principally, in the irregular surges of charge in thunderstorm lightning discharges.
atmospherics—Disturbing effects produced in radio receiving apparatus by atmospheric electrical phenomena such as an electrical storm. Static.
For the vast majority of people, such 'atmospherics' (or 'sferics') are simply a nuisance, leading to the familiar 'crackle' that can be detected on a home radio set, particularly in the 'AM' medium or long wavebands.(@see note 1 below) ...
Lightning: Sferics: Short for atmospherics. 17. Lightning: Stay in doors in your car. Stay off phone. 18. Lightning: Step leader. Dart Leader. Abt 300 feet per sec. 19. Lightning: St. Elmo's Fire: named after the patron saint 20.
Atmoradiograph A device for measuring the frequency of occurrence of atmospherics whose intensity is greater than a predetermined level.
 See also: Air, Surface, Temperature, Wind, Light
  
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